The 'solution' is "Symantec is investigating this problem to determine a resolution. This document will be updated when new information or a solution is available." - They have said this since at least version 6 - search their site and see at least 4 different Ghost versions saying that they are looking into it!

My situation, and fix, hope it works for you... NAV Pro 2K4 had crashed a few days before (it only happened that once) and I never shut off my desktop. Well, what was happening was the dump file was spanning at the 2GB mark. NAV has hooks in the OS that do RPC calls when the file is closed, telling NAV to scan it. Since NAV wasn't running, the RPC call was timing out. By time the RPC call failed, the Ghost client had given up the ghost (ha!) failing with error 19922.

A simple reboot fixed it, but it still took me about 3 hours of being very worried to fix, because I had made a major change to my network since the last backup...